如何在rails应用程序中缩小java脚本文件？

Question

我正试图减少生产服务器上我的rails应用程序的加载时间。目前，我关心的只是减少资产加载时间，而不是改变业务逻辑。一个在线测试人员发现我有2.25 MB的JS文件，其中包括第三方jQuery插件。而目前，我的所有资产都是从应用/资产路径渲染而来的。控制台在索引页面上加载这样的文件：

Started GET "/assets/jquery-ui.self像这样，有许多js文件。

在我production.rb文件我已经设置

config.serve_static_files =真
config.assets.js_compressor =：uglifier

在我nginx.conf我上述服务资产如下

location ^~ /(assets|fonts|swfs|images)/ { 
    gzip_static on; 
    expires max; 
    add_header Cache-Control public; 
    } 

production.rb

Rails.application.configure do 
    # Settings specified here will take precedence over those in config/application.rb. 
    # Code is not reloaded between requests. 
    Rails.application.config.assets.precompile += %w(*.js ^[^_]*.css *.css.erb) 

    config.cache_classes = true 

    # Eager load code on boot. This eager loads most of Rails and 
    # your application in memory, allowing both threaded web servers 
    # and those relying on copy on write to perform better. 
    # Rake tasks automatically ignore this option for performance. 
    config.eager_load = true 

    # Full error reports are disabled and caching is turned on. 
    config.consider_all_requests_local  = false 
    config.action_controller.perform_caching = true 
    config.action_mailer.raise_delivery_errors = true 

    # Enable Rack::Cache to put a simple HTTP cache in front of your application 
    # Add `rack-cache` to your Gemfile before enabling this. 
    # For large-scale production use, consider using a caching reverse proxy like 
    # NGINX, varnish or squid. 
    # config.action_dispatch.rack_cache = true 

    # Disable serving static files from the `/public` folder by default since 
    # Apache or NGINX already handles this. 
    #config.serve_static_assets = ENV['RAILS_SERVE_STATIC_FILES'].present? 

    config.serve_static_assets = true 

    # Compress JavaScripts and CSS. 
    config.assets.js_compressor = :uglifier 
    # config.assets.css_compressor = :sass 

    # Do not fallback to assets pipeline if a precompiled asset is missed. 
    config.assets.compile = true 
    #config.assets.precompile = ['*.js', '*.css', '*.css.erb'] 

    # Asset digests allow you to set far-future HTTP expiration dates on all assets, 
    # yet still be able to expire them through the digest params. 
    config.assets.digest = true 

    # `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb 

    # Specifies the header that your server uses for sending files. 
    # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache 
    # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX 

    # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies. 
    config.force_ssl = false 

    # Use the lowest log level to ensure availability of diagnostic information 
    # when problems arise. 
    config.log_level = :debug 

    config.action_mailer.default_url_options = { host: ENV["SMTP_HOST"] } 
    config.action_mailer.asset_host = ENV["SMTP_HOST"] 
    # config.action_mailer.delivery_method = :letter_opener 
    config.action_mailer.raise_delivery_errors = false 

    config.action_mailer.delivery_method = :smtp 
    config.action_mailer.smtp_settings = { 
    #Enter the smtp provider here ex: smtp.mandrillapp.com 
    address: ENV["SMTP_ADDRESS"], 
    port: ENV['SMTP_PORT'].to_i, 
    #Enter the smtp domain here ex: vendaxo.com 
    domain: ENV["SMTP_DOMAIN"], 
    #Enter the user name for smtp provider here 
    user_name: ENV["SMTP_USERNAME"], 
    #Enter the password for smtp provider here 
    password: ENV["SMTP_PASSWORD"], 
    authentication: 'plain', 
    enable_starttls_auto: true 
    } 

    # Prepend all log lines with the following tags. 
    # config.log_tags = [ :subdomain, :uuid ] 

    # Use a different logger for distributed setups. 
    # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new) 

    # Use a different cache store in production. 
    # config.cache_store = :mem_cache_store 

    # Enable serving of images, stylesheets, and JavaScripts from an asset server. 
    # config.action_controller.asset_host = 'http://assets.example.com' 

    # Ignore bad email addresses and do not raise email delivery errors. 
    # Set this to true and configure the email server for immediate delivery to raise delivery errors. 

    # Enable locale fallbacks for I18n (makes lookups for any locale fall back to 
    # the I18n.default_locale when a translation cannot be found). 
    config.i18n.fallbacks = true 

    # Send deprecation notices to registered listeners. 
    config.active_support.deprecation = :notify 

    # Use default logging formatter so that PID and timestamp are not suppressed. 
    config.log_formatter = ::Logger::Formatter.new 

    # Do not dump schema after migrations. 
    config.active_record.dump_schema_after_migration = false 
end 

Capistrano的deploy.rb发布资产仅线的要求。

append :linked_dirs, "log", "tmp/pids", "tmp/cache", "tmp/sockets", "vendor/bundle", "public/system", "public/uploads", "public/assets" 
namespace :deploy do 
    after :finishing, :compile_assets 
end 

我应该怎么做才能减少资产加载时间？让我知道是否需要进一步的信息。

Answer 1

在production.rb

config.assets.compile = true 

RAILS_ENV =生产耙资产：预编译

，推动所有压缩JS/CSS文件。它会节省您的加载时间并压缩所有js/css /图像。